Method of forming padding



Nov-"10, 192 5. 1,560,744.

R. o. WALDMAN METHOD OF FORMING PADDING Filed June 1923 INVENTOR Patented Nov. 10, 1925.

UNITED s rrcs 1,560,744 PATENT OFFICE.

' ROBERT o. WALDMAN, or BERKELEY, CALIFORNIA.

.METHO'D OF FORMING PADDING.

Application filed June 11, 1923. Serial No. 644,820.

My invention is an improved method of 4 forming a padding, which is particularly applicable in upholstering automobile seat backs, am: similar articles.

The object of my invention is to provide a method for forming seat padding which is inexpensive, rapid, and which is efiicient in operation.

In my method I place an adhesive substance between the folds of a fibrous packing strip thus binding the fibers around the adhesive closely together, and giving to the strip the necessary tensile strength for its insertion into the pockets formed in the seat back. By this method I detract very little from the natural resiliency of the fiber, since the adhesive layer is very thin, and there is no annoying noise when the padding is'compressed. In the annexed drawing in which my invention is illustrated I have shown the preferred form, but it may also be embodied in other forms, and in this application I desire to'cover my invention in whatever form it may be embodied.

Fig. 1 is a plan view of a chine, embodying my method.

Fig. 2 is a side elevation of the same.

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 1. o

4 is a sectional view takenon the line 44 of Fig. 2.

Fig. 5 is an end view of the fibrous strip before folding.

Fig. 6 is an end view of the fibrous strip after the first fold.

Fig. 7 is an'end view of the strip after the final fold is made.

Referring more particularly to the drawing, the machine comprises a base 1, on the forward end of which are mounted a pair of superimposed intake rollers 2and 3. A pair of outfeed rollers 4 and 5 mounted. on the rear end of base 1, and rollers 6, 7 are mounted between the rollers 2-3 and 4, 5. These rollers are each journaled upon a perforated pipe 8, the inlets of which are controlled by padding marollers 2, 36, 7 and 4, 5, are secure in pairs surface of the padding, thereby pu -sive is placed within the padding cocks 9. The pipes 8 which sup ort the of standards 10, 11 and 12 respectively. The purpose of the perforated pipes 8 is to admit gas therein, and thereby heat the rollers for a purpose which will be further described.

A forming die 13 is positioned between the rollers 2, 3 and 6, 7 and a second die 14. is positioned between the rollers 6, 7 and A pulley 15 is formed on the end of the roller 2, and a belt 16 encircles said pulley and. a suitable source of rotive power thereby driving my machine. A belt 17 extends over a sheave 18 on the roller 2, and over a sheave 19 on the roller 6. A belt 20 extends over the sheave 21 on the roller 6, and over a sheave 22 on the roller 4. The rollers 2, 3, 6, 7 and 4, 5 are geared together by means of pairs of gears 23, 24 and 25, respectively, thus all of the rollers are caused to rotate by the belt 16.

A spray nozzle 26 is positioned forwardly of the die 14 and slightly above the level of the padding going through the machine. This nozzle extends froma suitable pressure tank'*27 in which the adhesive substance is kept'under a suitable pressure to force it through the nozzle. The adhesive may be any desired substance such as glue, liquid rubber, pitch, tar, etc.

vA comb 28 is positioned forwardly of the nozzle 26 and the teetl. thereof engage the lin the fibers lengthwise of said padding and t ereby increasing its tensile strength.

The padding is fed between the rollers 2, 3 in a strip as shown in Fig. 5, in passing through the die 13 it is folded over upon itself as shown in Fig.6, and passes into the rollers 6, 7. The comb 28, now enga es the upper surface of the padding and pu ls the H ers lengthwise. A substantially narrow spray of adhesive from the nozzle 26,- lays upon the top of the padding and the ie 14 100 a ain folds the padding as shown in Fi 7. F mally the rollers 4, 5 press the pad ing firmly together and eject it from the machine. The rollers are all heated by the pipes 8 and the padding in passing between 1 their. is warmed which assists in the rapid drying of the adhesive, and facilitates the handling of the finished padding.

Thus a narrow strip of reinforcing adhethe outer surface being entirely free of said adhesive.

Having described my invention I claim:

1. The method of forming a seat paddin which consists in passing the padding be strip which consists in combing a ayer o tween rollers, thence under a comb, placing l5 fibers lengthwise in said strip, placing an adan adhesive upon said padding on combed hesive upon said combed fibers, and folding area, and foldlng the padding upon the ad- 6 said strip upon the adhesive. hesive.

' 2. The method of forming a seat padding 4. The method of forming a seat padding strip which consists in passing the padding which consists in passing a padding strip 20 between heatedrolls, lacing an adhesive on between heated rollers, and'under a comb,

- one surface of said padding, and folding said spraying an adhesive upon said strip and 1 adding upon said adheslve so that the adfolding said strip upon the adhesive, subliesive is within the strip, and none in the stantially as described.

' In testimonwhereof I afiix my si nature.

outside thereof.

OBERT O. WALD AN.

3. The method of forming a seat padding 

